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- Title
Capacity Bounds on the Ergodic Capacity of Distributed MIMO Systems over K Fading Channels.
- Authors
XingWang Li; Junfeng Wang; Lihua Li; Cavalcante, Charles C.
- Abstract
The performance of D-MIMO systems is not only affected by multipath fading but also from shadowing fading, as well as path loss. In this paper, we investigate the ergodic capacity of D-MIMO systems operating in non-correlated K fading (Rayleigh/Gamma) channels. With the aid of majorization and Minkowski theory, we derive analytical closed-form expressions of the upper and lower bounds on the ergodic capacity for D-MIMO systems over non-correlated K fading channels, which are quite general and applicable for arbitrary signal-to-noise ratio (SNR) and the number of transceiver antennas. To intuitively reveal the impacts of system and fading parameters on the ergodic capacity, we deduce asymptotic approximations in the high and low SNR regimes. Finally, we pursue the massive MIMO systems analysis for the lower bound and derive closed-form expressions when the number of antennas at BS grows large, and when the number of antennas at transceivers becomes large with a fixed and finite ratio. It is demonstrated that the proposed expressions on the ergodic capacity accurately match with the theoretical analysis.
- Subjects
MIMO systems; RADIO transmitter fading; MINKOWSKI space; SIGNAL-to-noise ratio; ANTENNAS (Electronics)
- Publication
KSII Transactions on Internet & Information Systems, 2016, Vol 10, Issue 7, p2992
- ISSN
1976-7277
- Publication type
Article
- DOI
10.3837/tiis.2016.07.007